After years of negotiations, nations have reached an agreement to establish the world's largest marine sanctuary in Antarctica's Ross Sea.

Twenty-four countries and the European Union reached the unanimous deal at an international meeting of the Commission for the Conservation of Antarctic Marine Living Resources in Hobart, Australia on Friday.

A police operation is underway in North Dakota to remove protesters from land owned by pipeline company Energy Transfer Partners.

The Associated Press reports several people have been arrested.

It's been a brutal forest fire season in California. But there's actually a greater threat to California's trees — the state's record-setting drought. The lack of water has killed at least 60 million trees in the past four years.

Scientists are struggling to understand which trees are most vulnerable to drought and how to keep the survivors alive. To that end, they're sending human climbers and flying drones into the treetops, in a novel biological experiment.

A new report by the World Wildlife Fund warns that global wildlife populations are in steep decline worldwide.

Protests against the Dakota Access Pipeline have been raging for months, but tensions have been escalating. Recently, tribal leaders — led by Standing Rock Sioux Tribe Chairman Dave Archambault II — called on the Department of Justice to look into what they describe as unnecessary use of force by state and local law enforcement.

If you want to feel virtuous the next time you chug a brewski, consider the Long Root Ale. This new beer, mildly fragrant and with a rye-like spiciness, is the first to use Kernza, a kind of wheat that could make agriculture more sustainable, especially in the face of climate change.

West Virginia residents have settled part of a civil lawsuit over a chemical spill that contaminated drinking water for thousands of people in 2014, according to The Associated Press.

Updated at 2:30 p.m. ET

The jury hearing the federal trial of seven people who occupied the Malheur National Wildlife Refuge in Oregon entered a fourth day of deliberations Wednesday — a day after jurors' ability to reach a verdict came into question.

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Antarctica's ice has been melting, most likely because of a warming climate. Now, newly published research shows the rate of melting appears to be accelerating.

Antarctica is bigger than the U.S. and Mexico combined, and it's covered in deep ice — more than a mile deep in some places. Most of the ice sits on bedrock, but it slowly flows off the continent's edges. Along the western edge, giant glaciers creep down toward the sea. Where they meet the ocean, they form ice shelves.

A drive 30 minutes north of Omaha, Neb., leads to the Fort Calhoun nuclear power plant. It's full of new equipment. There's a white concrete box building that's still under construction. It's licensed until 2033. But the plant is closing Monday.

Nuclear power is expensive, especially when compared to some of the alternatives, so the U.S. nuclear power industry is shrinking. As more plants go offline, industry leaders are forced to reckon with what critics call a "broken system" for taking plants out of service and storing radioactive waste.

Copyright 2016 American Homefront Project. To see more, visit American Homefront Project.

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Can A Place Still Be Home Even After Becoming Toxic?

Oct 21, 2016

Part 6 of the TED Radio Hour episode Toxic

About Holly Morris's TED Talk

Even thirty years after the devastating nuclear accident in Chernobyl, there are still people who call the place home. Filmmaker Holly Morris tells the stories of the mostly elderly women who decided to stay despite the toxicity.

About Holly Morris

How Does Our Brain Get Rid Of Toxins?

Oct 21, 2016

Part 4 of the TED Radio Hour episode Toxic

About Jeff Iliff's TED Talk

Neuroscientist Jeff Iliff talks about his research, which explores how the brain naturally flushes out toxins during sleep.

About Jeff Iliff